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News ReleaseAir Products and H2scan to Collaborate on "Real-Time" Hydrogen Sensor Technology

December 20, 2004 Lehigh Valley, Pa.

Air Products (NYSE:APD) and H2scan Corporation today announced the signing of a collaboration agreement to work on a development effort related to solid-state chemical sensors for applications in hydrogen production, refineries and chemical process facilities. The development work will focus on providing sensors to operate inside process lines or vessels at Air Products' production facilities providing "real-time" hydrogen concentration data from the process gas flow.

"The ability to have real-time hydrogen concentration data from the H2scan sensors throughout the entire production process will provide us with better capabilities to more effectively operate our hydrogen plants," said Robert Davis, director, Hydrogen/Hydrocarbon Services for Air Products. "More than 18 months of collaborative work by H2scan and Air Products have led to this agreement. We think it is a win-win for both our companies, as well as those clients where we can now offer this capability."

"Our proprietary technology, which provides real-time monitoring of hydrogen contained in process gas, is leading edge technology. We are very pleased to collaborate with Air Products on developing new product applications, and to gain valuable field information from Air Products' decades of hydrogen plant operating knowledge and market expertise," said Dennis Reid, president and chief executive officer of H2scan.

In the collaborative work, Air Products will provide practical experience related to solid-state sensors, hydrogen production process conditions, and the process stream molecular compositions to quantify the amount of hydrogen during actual production operations. This knowledge will benefit process control strategies and final product certification. Air Products also will bring to the table commercial information related to solid-state sensors, sensor integration, and the processes used in the hydrogen production marketplace. H2scan will provide technical and commercial information related to chemical sensor design, including electro-chemical matrices, development and the manufacturing process of the Robust Hydrogen SensorTM, as well as successive generations of sensors in its product line.

Air Products is an industry leader in hydrogen safety and engineering, and a global leader in hydrogen production and distribution.

About H2scan
H2scan Corporation, located in Valencia, Calif., provides hydrogen-specific leak detection and real-time process monitoring systems based on proprietary technology from Sandia National Laboratories and additional inventions and enhancements from H2scan's engineers. H2scan offers leading edge technology in three retail product lines including: portable handheld devices with a low level detection of 10 PPM; hydrogen-specific area monitors with virtually no cross sensitivities; and in-line real-time process monitors operating in temperatures up to 150degrees Celsiusand providing accuracy and speed of response comparable to analyzers that are several times more expensive. The ability to operate with or without oxygen, operate in the presence of CO, and not be affected by moisture, allows H2scan's sensors to solve many industrial problems for companies that need in-line real-time hydrogen measurement. For more information, visit

About Air Products
Air Products (NYSE:APD) serves customers in technology, energy, healthcare and industrial markets worldwide with a unique portfolio of products, services and solutions, providing atmospheric gases, process and specialty gases, performance materials and chemical intermediates. Founded in 1940, Air Products has built leading positions in key growth markets such as semiconductor materials, refinery hydrogen, home healthcare services, natural gas liquefaction, and advanced coatings and adhesives. The company is recognized for its innovative culture, operational excellence and commitment to safety and the environment and is listed in the Dow Jones Sustainability and FTSE4Good Indices. The company has annual revenues of $7.4 billion, operations in over 30 countries, and nearly 20,000 employees around the globe. Formore information, visit

***NOTE: This release may contain forward-looking statements. Actual results could vary materially, due to changes in current expectations.

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